• November 22, 2007 (Room G32, at 13:00)
  Bernd Sturmfels
  UC Berkeley and TU Berlin
  The Algebraic Degree of Semidefinite Programming

  Abstract: This lecture discusses recent interactions between convex optimization and algebraic geometry. Given a semidefinite programming problem which is specified by matrices over the rational numbers, each coordinate of its optimal solution is an algebraic number. We determine the degree of the minimal polynomials of these algebraic numbers. This degree measures the intrinsic algebraic complexity of solving semidefinite programs. Geometrically, it counts the critical points of a linear function over all matrices of fixed rank in a linear space of symmetric matrices.

• June 7, 2007 (Room G32, at 13:00)
  Christian Krattenthaler
  University of Vienna, Austria
  Generalized non-crossing partitions and the generalized cluster complex

• May 31, 2007 (Room G32, at 13:00)
  Stephanos Venakides
  Duke University, Durham NC, USA
  Rigorous leading order asymptotic solutions of
  the semiclassical focusing NLS equation
  Abstract

• May 24, 2007 (Room G32, at 13:00)
  Α. Γ. Καρτσάτος
  University of South Florida, Tampa, Florida
  Nonlinear accretive operators and functional evolution problems
  in Banach spaces
  Abstract

• May 3, 2007 (Room G32, at 12:00)
  Dusan Repovs
  University of Ljubljana, Ljubljana, Slovenia
  The recognition problem for Topological Manifolds
  Abstract

• April 20, 2007 (Room A32, at 17:00)
  Alain Pajor
  Universite de Marne-la-Vallee, Paris, France
  Reconstruction and subgaussian operators
  Abstract

• October 19, 2006 (Room A32, at 13:00)
  Vern Paulsen
  University of Houston, Texas
  Projectivity and Injectivity in Topology and Analysis
  Abstract

• August 28, 2006 (Room A32, at 12:00)
  Bruce Kleiner
  University of Yale
  Perelman's work on Thurston's Geometrization Conjecture

• April 13, 2006 (Room A32, at 13:00)
  Jean-Louis Loday
  University of Strasbourg, Director of Research CNRS
  Algebraic operads
  Abstract

• March 23, 2006 (Room A32, at 12:00)
  P. Kropholler
  University of Glasgow
  Modular invariants of finite orthogonal groups
  Abstract

• November 24, 2005 (Room A32, at 13:00)
  D. Epstein
  University of Warwick
  Multichannel imaging in cell biology
  Abstract

• September 13, 2005 (Room A32, at 13:00)
  V. D. Milman
  Tel Aviv University, Israel
  Functional versions of some geometric inequalities

• May 26, 2005 (Room G31, at 13:00)
  V. I. Paulsen
  University of Houston, USA
  Frames, Graphs and Codes
  Abstract

• May 20, 2005 (Room G23, at 13:00)
  A. G. Kartsatos
  University of South Florida, Tampa, Florida (USA)
  Topological Degree Theories and Eigenvalue Problems in Banach Spaces
  Abstract

• May 19, 2005 (Room G31, at 13:00)
  E. G. Katsoulis
  East Carolina University, Greenville, NC (USA)
  Tensor algebras of higher rank graphs and their C*-envelopes
  Abstract

• March 17, 2005 (Room G31, at 13:00)
  J. M. Wright
  University of Reading, England
  The generic dynamics factor
  Abstract

• October 14, 2004 (Room G31, at 13:00)
  L. Grafakos
  University of Missouri, Columbia
  The theorem of Carleson - Hunt: a new approach

• May 28, 2004 (Room G31, at 15:00)
  D. Natroshvilli
  Georgian Technical University, Tbilisi
  Mathematical problems of the theory of elasticity of chiral materials

• May 20, 2004 (Room G31, at 13:00)
  Ν. Καρκανιάς
  School of Engineering and Mathematical Sciences, City University, Great Britain
  Approximate algebraic computations: Greatest common divisor of
  many polynomials and generalised resultants

• April 22, 2004 (Room G31, at 13:00)
  W. Luh
  University of Trier, Germany
  Zeros of partial sums

• April 1, 2004 (Room G31, at 13:00)
  A. Papadopoulos
  University of Strasbourg, France
  Spaces of non-positive curvature

• March 18, 2004 (Room G31, at 13:00)
  G. Reinert
  Oxford University, Great Britain
  Statistics based on word mathematics in DNA sequences

• February 19, 2004 (Room G31, at 12:00)
  Π. Παπάζογλου
  Πανεπιστήμιο Αθηνών
  Διασπάσεις ομάδων και σχεδόν ισομετρίες

• January 29, 2004 (Room G31, at 12:00)
  Γ. Δάσιος
  Πανεπιστήμιο Πατρών
  Fourier, Lax, Gelfand, Fokas: Από τον Γενικό στον Ειδικό
  Μετασχηματισμό των Συναρτήσεων

• December 12, 2003 (Room G31, at 12:00)
  Χρ. Χρυσομαλάκος
  Universidad Nacional Autonoma de Mexico
  Combinatorics and Hopf Algebras in Physics

• December 1, 2003 (Room G31, at 12:00)
  Γ. Μοσχοβάκης
  Πανεπιστήμιο Αθηνών
  Αριθμητική πολυπλοκότητα: Είναι ο Ευκλείδειος αλγόριθμος
  βέλτιστος στο είδος του;

• October 24, 2003 (Room G31, at 13:00)
  A. Louveau
  University Paris VI
  Borel equivalence relations

• June 12, 2003 (Room G32, at 13:00)
  M. E. Glicksman
  Materials Science & Engineering Department, Rensselaer Polytechnic Institute
  Boundary Motion in Polyhedral Space-Filling Networks

• June 5, 2003 (Room G32, at 13:00)
  Μ. Γ. Ακρίτας
  Penn. State University, Ε. Μ. Π.
  Στατιστική συμπερασματολογία μοντέλων ανάλυσης διασποράς
  με έναν παράγοντα εμφανιζόμενο σε πολλές στάθμες

• May 29, 2003 (Room G32, at 13:00)
  Αθ. Καρτσάτος
  University of South Florida, USA
  Degree theories in Banach spaces and applications

• May 15, 2003 (Room G32, at 13:00)
  Αθ. Τζαβάρας
  University of Wisconsin-Madison, USA
  Συμμετρικοποίηση των εξισώσεων πολύκυρτης ελαστοδυναμικής
  και προσεγγίσεις τύπου λογισμού μεταβολών

• April 17, 2003 (Room G32, at 13:00)
  H. Garth Dales
  University of Leeds, Great Britain
  Modules over group algebras

• April 10, 2003 (Room G32, at 13:00)
  A. Ya. Helemskii
  Moscow State University
  Quantum mathematics and its creators

• March 27, 2003 (Room G32, at 13:00)
  Απ. Γιαννόπουλος
  Πανεπιστήμιο Κρήτης
  Ανελίξεις του Gauss και Κυρτή Γεωμετρική Ανάλυση

• March 20, 2003 (Room G32, at 13:00)
  Γ. Α. Αθανασούλης
  Ε. Μ. Π.
  Επιφανειακοί κυματισμοί βαρύτητας: μια εισαγωγή στη
  φαινομενολογία και στη μαθηματική μοντελοποίηση

• March 13, 2003 (Room G32, at 13:00)
  Α. Μελάς
  Πανεπιστήμιο Αθηνών
  Η γεωμετρία των μεγιστικών τελεστών

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